Owner's Manual

770 | Chapter 29. MSDP
NETGEAR 8800 User Manual
To allow an unlimited number of SA entries, use 0 (zero) as the value for <max-sa>.
To display the SA cache limit, use the following command:
show msdp [peer {detail} | {peer} <remoteaddr>] {vr <vrname>}
Redundancy
Because the peering relationship between MSDP peers is based on TCP connections, after a
failover occurs the TCP connections need to be re-established again. All SA cache entries
learned from the old peering relationships must be flushed and relearned again on new TCP
connections.
On a dual MSM system, MSDP runs simultaneously on both MSMs. During failover, the
MSDP process on the active MSM receives and processes all control messages. MSDP on
the standby MSM is in a down state, and doesn’t receive, transmit, or process any control
messages. If the active MSM fails, the MSDP process loses all state information and the
standby MSM becomes active. However, the failover from the active MSM to the standby
MSM causes MSDP to loses all state information and dynamic data, so it is not a hitless
failover.
On fixed-configuration, stackable switches, an MSDP process failure brings down the switch.
Scaling Limits
SNMP MIBs
SNMP MIB access is not supported for MSDP.
Configuration Examples
This section provides the following configuration examples:
• Configuring MSDP on page 771
Table 72. MSDP Scaling Limits
Platform Type MSDP Peering
Connections (Active TCP
Connections
Entries in SA Cache Mesh-Groups
Chassis 32 16,000 8
Stackable 16 8,000 8
PC 12 8,000 4